{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3f117f137b678cd15850ec4398854762ef2f062580d1a44a74ac0c4040c43298",
    "signature": "0x9bdab47be414343120815ded358c323082e46f4b0501e5792f4a475fdde3b67f3d27ea7def4b95306142973f8082c65f788d0d0c07d5a5927bcf3676759d5a381c",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}